Supported devices

Abstract

To make adjustment of an arm unit smoother in a support device. [Solution] The device comprises a support unit 3, an arm unit 4, and an extension unit 6, the arm unit 4 being connected to the support unit 3 and capable of swinging in the vertical direction Z relative to the support unit 3, the extension unit 6 being configured to have a longitudinal direction L, being connected to the arm unit 4 and the support unit 3, and comprising a biasing member 61 and at least one rolling member, the biasing member 61 being configured to be capable of extending and retracting along the longitudinal direction L, and the at least one rolling member being attached to the biasing member 61 so as to be capable of rolling, and being configured to be capable of moving along the longitudinal direction L when the biasing member 61 is extended or retracted.

Description

[Technical field]

[0001] The present invention relates to a support device, and more particularly to a support device for supporting a portable device such as a microphone or a camera. [Background technology]

[0002] An example of a conventional support device having a suspension function is the support device described in Patent Document 1. Here, Fig. 1 is a perspective view showing the configuration of the conventional support device 1.

[0003] As shown in FIG. 1, a conventional support device 1 comprises a base 11, a lower arm 12 that is arranged on the base 11 and can swing relative to the base 11, an upper arm 13 that is arranged on the lower arm 12 and can swing relative to the lower arm 12, and whose tip can hold a microphone, and a force transmission mechanism (not shown) that is arranged within the lower arm 12.

[0004] The force transmission mechanism includes a piston, which can transmit the reaction force from the upper arm 13 to the base 11 by compressing it. In this manner, the upper arm 13 can be supported at various angles. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] China Utility Model No. 217356185 Summary of the Invention [Problem to be solved by the invention]

[0006] However, because the length of the piston changes according to the angle of the upper arm, when the piston is in an extended or suspended state, there is a risk of the piston being bent and deformed due to the angle change of the upper arm or reaction force.

[0007] When such deformation of the piston occurs, resistance is generated when the piston moves, and the upper arm cannot swing smoothly. Therefore, there is room for improvement in the design of the conventional support device.

[0008] SUMMARY OF THE PRESENT DISCLOSURE In view of the above problems, the present invention aims to provide a support device that can solve the above-mentioned drawbacks. [Means for solving the problem]

[0009] In order to achieve the above object, the present invention includes a support unit, an arm unit, and an extension unit, the arm unit is connected to the support unit and can swing in a vertical direction relative to the support unit; The telescopic unit is configured to have a longitudinal direction, is connected to the arm unit and the support unit, and includes a biasing member and at least one rolling member; The biasing member is configured to be expandable and contractable along the longitudinal direction, The at least one rolling member is attached to the biasing member so as to be able to roll, and is configured to be able to move along the longitudinal direction when the biasing member is extended or contracted. Effect of the Invention

[0010] According to the support device of the present invention, the rolling member is attached to the biasing member so as to be able to roll, and the biasing member can move along the arm unit when it is extended or retracted, so that the straightness of the biasing member can be maintained when it is extended or retracted, and therefore the frictional resistance generated when the biasing member is extended or retracted can be reduced, and the adjustment of the arm unit can be made smoother. In this way, the reliability of the support device can be dramatically improved. [Brief description of the drawings]

[0011] [Figure 1] FIG. 11 is a perspective view showing the configuration of a conventional supporting device. [Diagram 2] 1 is a perspective view showing the configuration and usage state of a support device according to an embodiment of the present invention; [Diagram 3] FIG. 2 is a partially exploded perspective view showing a partial configuration of the support device according to the embodiment. [Figure 4] FIG. 4 is a partially exploded perspective view showing another configuration of the support device according to the embodiment. [Diagram 5] FIG. 2 is a side cross-sectional view showing the configuration of the support device according to the embodiment. [Figure 6] FIG. 4 is a partial cross-sectional view showing a state in which the arm unit according to the embodiment is at an upper limit position. [Figure 7] FIG. 4 is a partial cross-sectional view showing a state in which the arm unit according to the embodiment is in a lower limit position. [Figure 8] 8 is a cross-sectional view taken along line VIII-VIII in FIG. 5. [Figure 9] FIG. 2 is a partial cross-sectional view showing a state in which the movable seat according to the embodiment is in a high load position. [Figure 10] FIG. 2 is a partial cross-sectional view showing a state in which the movable seat according to the embodiment is in a low load position. [Figure 11] 4 is a partial cross-sectional view showing a state in which the preload member according to the embodiment is in a first preload position. FIG. [Figure 12] 4 is a partial cross-sectional view showing a state in which the preload member according to the embodiment is in a second preload position. FIG. [Figure 13] FIG. 4 is a partial perspective view showing a modified example of the extension unit according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A support device according to an embodiment of the present invention will now be described with reference to the drawings.

[0013] The configuration of a support device according to an embodiment of the present invention will be described with reference to Figures 2 to 13. Here, Figure 2 is a perspective view showing the configuration and usage state of a support device according to an embodiment of the present invention, Figures 3 and 4 are partially exploded perspective views showing a part of the configuration and another part of the configuration of the support device according to the embodiment, and Figure 5 is a side cross-sectional view showing the configuration of the support device according to the embodiment.

[0014] 6 and 7 are partial cross-sectional views showing a state in which the arm unit 4 according to the embodiment is in an upper limit position and a lower limit position, FIG. 8 is a cross-sectional view showing a cross section along line VIII-VIII in FIG. 5, FIGS. 9 and 10 are partial cross-sectional views showing a state in which the movable sheet 71 according to the embodiment is in a high load position and a low load position, FIGS. 11 and 12 are partial cross-sectional views showing a state in which the preload member 81 according to the embodiment is in a first preload position and a second preload position, and FIG. 13 is a partial perspective view showing a modified example of the extension unit 6 according to the embodiment.

[0015] As shown in Figures 2 and 5, a support device according to one embodiment of the present invention is attached to a fixed object 21 to hold a portable object 22, and includes a support unit 3, an arm unit 4, a holding unit 5, an extension unit 6, an adjustment unit 7, and a preload unit 8.

[0016] Here, the fixed object 21 is, for example, a table or a stand, and the portable object 22 is, for example, a portable device such as a microphone, a smartphone, a tablet, or a camera.

[0017] The support unit 3 is attached to the fixed object 21 as shown in FIG. 2, and includes a support arm 31 and a base 32 as shown in FIGS.

[0018] 3 and 5, the support arm 31 has an insertion hole 311. More specifically, the insertion hole 311 is formed at one end of the support arm 31 and extends from the upper end surface of the support arm 31 to the lower end surface of the support arm 31 along the first axis X1 in the vertical direction Z.

[0019] As shown in Figures 3 and 5, the base 32 is arranged on the support arm 31 so as to be rotatable about the first axis X1 as a rotation axis, and has a rod portion 321, a pair of plate portions 322, a first stop portion 323, and a pair of second stop portions 325.

[0020] The pair of plate portions 322 are disposed at a distance from each other along a second axis X2 perpendicular to the up-down direction Z, as shown in FIG.

[0021] 3 and 5, the first stopper portion 323 is plate-shaped and disposed so as to span across the upper ends of the pair of plate portions 322, and extends along the second axis X2. Here, the pair of plate portions 322 and the first stopper portion 323 together define a movement space 324. In this embodiment, the first stopper portion 323 has a notch 326.

[0022] As shown in FIG. 3, the pair of second retaining portions 325 extend along the first axis X1 and are respectively arranged on the pair of plate portions 322 so as to be adjacent to the lower ends of the pair of plate portions 322 on the opposite side of the first retaining portion 323 and adjacent to the lower ends of the pair of plate portions 322.

[0023] 3 to 5, the arm unit 4 is configured to have a longitudinal direction L, and is connected to the base 32 of the support unit 3 so as to be able to rotate about a first axis X1 as a rotation axis. Also, the arm unit 4 includes a swing arm 41, a lower seat 42, four magnets 43, a cover plate 44, and a pivot 45 as shown in FIG.

[0024] As shown in Figures 3 to 5, the swing arm 41 is connected to a pair of plate portions 322 of the support unit 3, and can swing in the vertical direction Z about a second axis X2 perpendicular to the longitudinal direction L as a rotation axis.

[0025] Specifically, the swing arm 41 is formed in a tubular shape with an opening on the lower side, as shown in Fig. 4. Also, the first stopper portion 323 of the base 32 faces the swing arm 41, as shown in Fig. 5.

[0026] As shown in FIG. 4, the oscillating arm 41 has a first end 411, two second ends 412, a sleeve portion 413, a first abutment surface 414, two second abutment surfaces 415, and two rail portions 416.

[0027] 4, the two second ends 412 are disposed on opposite sides of the first end 411 and spaced apart from each other along the second axis X2. The sleeve portion 413 is connected to the first end 411.

[0028] 4, the first abutment surface 414 faces the base 32 and is formed between the two second ends 412 so as to extend along the second axis X2. The first abutment surface 414 has a protrusion 417 extending along the longitudinal direction L.

[0029] As shown in FIG. 4, the two second contact surfaces 415 are formed on the inner circumferential surface of the swing arm 41, face the base 32, and are adjacent to the two second ends 412, respectively.

[0030] As shown in FIG. 4, the two rail portions 416 are each formed on the inner surface of the oscillating arm 41 so as to extend along the longitudinal direction L and be spaced apart from each other along the second axis X2, and are adjacent to the two second ends 412, respectively, face the lower seat portion 42, and are spaced apart from the lower seat portion 42 on the first axis X1.

[0031] As shown in FIG. 5, the lower seat portion 42 is provided on the swing arm 41 and defines an installation space 401 together with the swing arm 41 .

[0032] As shown in FIG. 4, the four magnets 43 are disposed on the lower surface of the lower seat portion 42 on the opposite side to the swing arm 41.

[0033] As shown in Figures 4 and 5, the cover plate 44 is attracted by the magnet 43 to cover the above-mentioned opening of the oscillating arm 41, and together with the lower seat portion 42 and the oscillating arm 41, defines a storage space 402 (see Figure 5) for storing the wire.

[0034] 4, two arcuate edges 441 are formed on both ends of the cover plate 44 in the longitudinal direction L. These arcuate edges 441, together with the swing arm 41, define two openings 440 that communicate with the accommodation space 402. A wire (not shown) accommodated in the accommodation space 402 can extend to the outside through these openings 440.

[0035] The pivot 45 is disposed so as to pass through the pair of plate portions 322 of the base 32 and the pair of second ends 412 of the swing arm 41 along the second axis X2, and to pivotally connect the swing arm 41 and the base 32.

[0036] As shown in FIGS. 6 and 7, the arm unit 4 can swing in the vertical direction Z relative to the support unit 3 between an upper limit position (see FIG. 6) and a lower limit position (see FIG. 7).

[0037] 6, when the arm unit 4 is at the upper limit position, the arm unit 4 extends upward, and the first abutment surface 414 of the swing arm 41 abuts against and is stopped by the first stop portion 323 of the base 32. Also, the convex portion 417 of the first abutment surface 414 engages with the notch 326, thereby making it possible to maintain the arm unit 4 at the upper limit position.

[0038] In this case, the arm unit 4 intersects with the first axis X1 at an upper limit angle (θ1), which is within a range of 10° to 30°, for example, 20°. More specifically, the upper limit angle (θ1) is an angle in the counterclockwise direction with respect to the first axis X1, as shown in FIG.

[0039] 7, when the arm unit 4 is at the lower limit position, the arm unit 4 extends downward, and the two second abutment surfaces 415 of the swing arm 41 are abutted against and stopped by the two second stop portions 325 of the base 32. In this way, the arm unit 4 can be maintained at the lower limit position.

[0040] In this case, the arm unit 4 intersects with the first axis X1 at a lower limit angle (θ2), which is within a range of 40° to 60°, for example, 50°. More specifically, the lower limit angle (θ2) is an angle in the clockwise direction with respect to the first axis X1, as shown in FIG.

[0041] As shown in Figures 2 and 5, the holding unit 5 is connected to one end of the arm unit 4 opposite the support unit 3 for holding a portable item 22 such as a microphone, and is provided with a lug sheet 51 and a holding member 52.

[0042] As shown in Figures 2 and 5, the lug sheet 51 is attached so as to surround the sleeve portion 413 of the oscillating arm 41, and can rotate about a third axis X3 that is perpendicular to both the first axis X1 and the second axis X2.

[0043] As shown in Figures 2 and 5, the holding member 52 is connected to the lug sheet 51, is capable of holding the portable item 22, and is capable of swinging about a fourth axis X4 (see Figure 2) that is parallel to the second axis X2 as a rotation axis.

[0044] With this configuration, the held portable object 22 can swing about the fourth axis X4 and rotate about the third axis X3.

[0045] 3, 4, 5 and 8, the extension unit 6 is configured to have a longitudinal direction L, and is disposed so as to be connected to the arm unit 4 and the support unit 3 within the installation space 401. The extension unit 6 also includes a biasing member 61, an interlocking member 62, two rolling members 63, and a pressing member 64.

[0046] 5, the biasing member 61 is accommodated and positioned between the swing arm 41 and the lower seat 42, i.e., within the installation space 401. In this embodiment, the biasing member 61 is a compressed air spring (e.g., a pneumatic cylinder) or a hydraulic spring (e.g., a hydraulic cylinder), and is configured to be able to expand and contract along the longitudinal direction L.

[0047] Moreover, the amount of expansion and contraction of the biasing member 61 in the longitudinal direction L is smaller than the length of the two rail portions 416 in the longitudinal direction L.

[0048] As shown in FIG. 5, one end of the interlocking member 62 is pivotally connected to one end of the biasing member 61 , and a portion of the interlocking member 62 is housed within the movement space 324 .

[0049] In this embodiment, as shown in Fig. 3, the interlocking member 62 is a link bar formed in an arc shape, and the recess of the arc-shaped link bar faces an opening 440 (see Fig. 5) that is close to the base 32 of the arm unit 4. In this way, it is possible to prevent the interlocking member 62 from interfering with the wire in the accommodation space 402.

[0050] As shown in FIG. 3, the two rolling members 63 are attached to the biasing member 61 so as to be able to roll, and can move along the longitudinal direction L when the biasing member 61 expands or contracts.

[0051] Specifically, the two rolling members 63 are respectively attached to the two rail portions 416 so as to be able to move and roll along the two rail portions 416, as shown in Fig. 8. In this embodiment, the rolling members 63 are bearings, but are not limited thereto.

[0052] 4 and 5, the pressing member 64 is connected to the other end of the biasing member 61, and has two first inclined surfaces 641. The two first inclined surfaces 641 are spaced apart from each other along the fourth axis X4. In this embodiment, the number of the first inclined surfaces 641 is two, but the present invention is not limited thereto, and it is sufficient that the pressing member 64 has at least one first inclined surface 641.

[0053] As shown in Figures 3 and 5, the adjustment unit 7 includes a movable sheet 71 that can move in the vertical direction Z relative to the base 32 in the movement space 324, and a resistance adjustment part 72 for driving the movement of the movable sheet 71.

[0054] The movable sheet 71 is pivotally connected to the other end of the interlocking member 62, and can move in the vertical direction Z relative to the base 32 between a high load position (see FIG. 9) and a low load position (see FIG. 10).

[0055] 3 and 5, the resistance adjuster 72 extends along the up-down direction Z, penetrates the base 32, and is screwed into the movable sheet 71. In this embodiment, the resistance adjuster 72 is a bolt.

[0056] The biasing member 61 can be switched in the longitudinal direction L between a first length d1 corresponding to a high load position and a second length d2 corresponding to a low load position and greater than the first length d1.

[0057] 9 and 10, the interlocking member 62 intersects with the biasing member 61 at a first angle (θ3) when in the high load position, and intersects with the biasing member 61 at a second angle (θ4) larger than the first angle (θ3) when in the low load position. Here, the first angle (θ3) and the second angle (θ4) are both angles in the counterclockwise direction based on the direction in which the biasing member 61 extends.

[0058] As shown in Figures 4, 5, 11 and 12, the preload unit 8 is connected to the swing arm 41 of the arm unit 4 and includes a preload member 81 that is movably provided within the installation space 401 so as to be able to bias the biasing member 61 with a predetermined preload force, and a preload adjustment member 82 for driving the movement of the preload member 81.

[0059] 4, 11, and 12, the preload member 81 faces the two first inclined surfaces 641 of the pressing member 64 and has two second inclined surfaces 811 that respectively abut against the two first inclined surfaces 641. Here, the number of second inclined surfaces 811 is two, and the number of second inclined surfaces 811 may correspond to the number of first inclined surfaces 641.

[0060] 4, 11, and 12, the preload adjusting member 82 extends along the direction of the first axis X1, passes through the preload member 81, and is screwed into the swing arm 41. In this embodiment, the preload adjusting member 82 is a bolt.

[0061] In assembling the preload unit 8, when the biasing member 61 is not pivotally connected to the movable sheet 71 through the interlocking member 62 and held in the arm unit 4, first the biasing member 61 abuts against the inner wall of the oscillating arm 41, and then the preload adjustment member 82 extends so as to pass through the preload member 81 and screws into the oscillating arm 41.

[0062] When the preload adjustment member 82 is screwed in along the direction of the first axis X1, i.e., when the preload adjustment member 82 moves along the direction of the first axis X1 to screw into the swing arm 41, the preload adjustment member 82 moves the preload member 81 along the direction of the first axis X1, and the preload member 81 presses the pressing member 64 along the longitudinal direction L, thereby biasing the biasing member 61.

[0063] In this way, the biasing member 61 is pressed with a predetermined preload force and held by the preload member 81 and the movable sheet 71, thereby preventing the biasing member 61 from shaking and the noise caused by the shaking.

[0064] The biasing member 61 can be positioned between the swing arm 41 and the lower seat 42 by fixedly connecting the lower seat 42 to the swing arm 41 and the preload member 81. In this embodiment, the lower seat 42 is fixedly connected to the swing arm 41 and the preload member 81, but this is not limited thereto, and in other embodiments, the lower seat 42 may be directly fixed to the swing arm 41. Here, the biasing member 61 is not limited to being the compressed air spring or hydraulic spring described above, and may be a mechanical spring.

[0065] As shown in Figures 6 to 9, when the arm unit 4 is operated to move from the upper limit position to the lower limit position along the vertical direction Z, or when the arm unit 4 is operated to move from the lower limit position to the upper limit position along the vertical direction Z, the arm unit 4 can swing relative to the support unit 3 with the second axis X2 as a rotation axis.

[0066] At this time, the arm unit 4 can obtain a supporting force for positioning the portable object 22 by compressing or stretching the biasing member 61 of the interlocking member 62 through its pivotal connection with the movable sheet 71 and the biasing member 61 of the interlocking member 62.

[0067] When the urging member 61 is compressed by the interlocking member 62, or when the urging member 61 is stretched by the interlocking member 62, the rolling member 63 can move and roll along the rail portion 416 as the urging member 61 expands and contracts along the longitudinal direction L.

[0068] In this way, by the rolling member 63 rolling, the straightness of the biasing member 61 can be maintained when it is extended or retracted, so that the frictional resistance generated when the biasing member 61 is extended or retracted can be reduced, thereby making it possible to adjust the arm unit 4 more smoothly.

[0069] With this configuration, the arm unit 4 receives a downward load force (e.g., the weight of the held portable item 22) in a loaded state, and the biasing member 61 can provide an upward supporting force that opposes the downward load force.

[0070] Therefore, the rolling member 63 is provided so as to contact the rail portion 416 of the swing arm 41 upward, and a better supporting effect can be obtained. Here, the rolling member 63 is not limited to contacting the swing arm 41, and may contact the lower seat portion 42, or may contact both the swing arm 41 and the lower seat portion 42.

[0071] As shown in Figures 5, 9, and 10, when adjusting the load of the telescopic unit 6, the movable sheet 71 can be moved along the vertical direction Z by screwing the resistance adjustment part 72 clockwise (right) or counterclockwise (left).

[0072] In this way, when the movable sheet 71 is in the high load position as shown in Fig. 9, the urging member 61 is compressed and contracted, increasing the air pressure and hydraulic pressure in the urging member 61 and generating a larger supporting force. On the other hand, when the movable sheet 71 is in the low load position as shown in Fig. 10, the urging member 61 is stretched, decreasing the air pressure and hydraulic pressure in the urging member 61 and generating a smaller supporting force. This allows the load of the extension unit 6 to be adjusted.

[0073] Furthermore, when the movable sheet 71 is in a low load position, the included angle between the biasing member 61 and the interlocking member 62 is larger (i.e., the second angle (θ4)), and the biasing member 61, the interlocking member 62, and the movable sheet 71 are substantially aligned along the longitudinal direction L.

[0074] Therefore, when the arm unit 4 swings in the vertical direction Z, the interlocking member 62 can directly compress or stretch the biasing member 61 along an approximately straight line, thereby reducing the sense of resistance caused by operating the arm unit 4 and making it possible to reduce the resistance force felt by the user when operating the arm unit 4.

[0075] On the other hand, when the movable sheet 71 is in the high load position, the included angle between the urging member 61 and the interlocking member 62 is smaller (i.e., the first angle (θ3)), and the urging member 61, the interlocking member 62, and the movable sheet 71 are misaligned with each other in the longitudinal direction L. This makes it possible to increase the resistance force felt by the user when operating the arm unit 4.

[0076] In this embodiment, the number of the rolling members 63 is two, but the present invention is not limited to this, and the same function can be achieved as long as there is at least one rolling member 63. As an example, FIG. 13 shows a case where the extension unit 6 has only one rolling member 63.

[0077] In summary, according to the support device of the present invention, the rolling member 63 is attached to the biasing member 61 so as to be able to roll, and can move along the arm unit 4 when the biasing member 61 is extended or retracted. This allows the biasing member 61 to maintain its straightness when extended or retracted, thereby reducing the frictional resistance generated when the biasing member 61 is extended or retracted, and ultimately making it possible to adjust the arm unit 4 more smoothly.

[0078] The resistance force related to the load of the telescopic unit 6 and the operation of the arm unit 4 can be adjusted by the adjustment unit 7, so that it can be adapted to hold different weights of portable objects 22. In addition, since adjustment can be performed by simply rotating the resistance adjustment part 72, it is easy to operate.

[0079] Furthermore, in assembling the urging member 61, the urging member 61 can be pressed with a predetermined preload force, and therefore the urging member 61 is held by the preload member 81 and the movable sheet 71 with a restoring force, thereby preventing the urging member 61 from shaking and the generation of noise due to the shaking.

[0080] Furthermore, since the cover plate 44 is attracted by the magnet 43 and held in place on the lower base portion 42, when operations such as replacing or arranging wires are to be performed, the cover plate 44 can be easily removed from the lower base portion 42 without the need for any other tools, thereby improving the convenience of the operations involved.

[0081] As in the above embodiment, the present invention can be modified in various ways without departing from the spirit and scope of the present invention. [Industrial Applicability]

[0082] The support device of the present invention can make the adjustment of the arm unit smoother, so the present invention has industrial applicability. [Explanation of symbols]

[0083] 1 Support device 11. Base 12 Lower Arm 13 Upper arm 21 Fixed objects 22 Personal belongings 3 Support Unit 31 Support arm 311 Insertion hole 32 Pedestal 321 Rod part 322 Board part 323 First stop 324 Moving Space 325 Second stopper 326 Cut 4 Arm Unit 401 Installation space 402 Containment Space 41 Swing Arm 411 First end 412 Second end 413 Sleeve section 414 1st contact surface 415 Second contact surface 416 Rail section 417 Convex 42 Gezabu 43 Magnet 44 Lid plate 440 Opening 441 Arcuate Edge 45 Pivot 5 Holding Unit 51 Rug Sheet 52 Retaining member 6. Telescopic unit 61 Pressing member 62 Interlocking parts 63 Rolling members 64 Pressing member 641 1st slope 7 Adjustment Unit 71 Movable seat 72 Resistance adjustment section 8 Preload unit 81 Preload member 811 2nd slope 82 Preload adjustment member X1 1st axis X2 2nd axis X3 3rd axis X4 4th axis θ1 Upper limit angle θ2 Lower limit angle θ3 1st angle θ4 2nd angle L Longitudinal Z vertical direction d1 First length d2 Second length

Claims

1. The device includes a support unit, an arm unit, and an extension unit. the arm unit is connected to the support unit and can swing in a vertical direction relative to the support unit; The telescopic unit is configured to have a longitudinal direction, is connected to the arm unit and the support unit, and includes a biasing member and at least one rolling member; The biasing member is configured to be expandable and contractable along the longitudinal direction, the at least one rolling member is rollably attached to the biasing member and configured to move along the longitudinal direction when the biasing member is expanded or contracted. A supporting device comprising:

2. The support device further comprises an adjustment unit, The support unit includes a support arm and a base disposed on the support arm so as to be rotatable about a first axis, the adjustment unit includes a movable sheet that can move in the up-down direction relative to the base, and a resistance adjustment part that drives the movement of the movable sheet, The telescopic unit further includes an interlocking member pivotally connected to the biasing member and the movable sheet.

2. The support device according to claim 1 .

3. The support device further comprises a preload unit, The arm unit includes a swing arm that is connected to the support unit and can swing about a second axis that is perpendicular to the longitudinal direction as a rotation axis, and a lower seat portion that is provided on the swing arm and defines an installation space together with the swing arm, the preload unit is connected to the arm unit and includes a preload member movably provided within the installation space so as to be able to urge the urging member with a predetermined preload force, and a preload adjustment member for driving the movement of the preload member.

2. The support device according to claim 1 .

4. The telescopic unit further includes a pressing member that is provided in the installation space and is connected to the biasing member, the pressing member has at least one first inclined surface facing the preload member; the preload member has at least one second inclined surface in contact with the first inclined surface of the pressing member, the preload adjustment member extends along the direction of the first axis, penetrates the preload member, and is screwed into the swing arm to move the preload member, When the preload adjusting member moves along the direction of the first axis to be screwed into the swing arm, the preload adjusting member is configured to be able to press the pressing member along the longitudinal direction to bias the biasing member.

4. The support device according to claim 3.

5. The arm unit includes a swing arm that can rotate about a first axis as a rotation axis and can swing about a second axis that is connected to the support unit and perpendicular to the longitudinal direction as a rotation axis, and a lower seat portion that is provided on the swing arm and defines an installation space together with the swing arm, The extension unit is provided in the installation space, The biasing member is a compressed air spring or a hydraulic spring, and is positioned between the swing arm and the lower seat.

2. The support device according to claim 1 .

6. the swing arm has an inner circumferential surface on which two rail portions are formed, the rail portions each extending along the longitudinal direction; The two rail portions are spaced apart from each other along the second axis and from the lower seat portion along the first axis, The telescopic unit has two of the rolling members, The two rolling members are attached to the two rail portions, respectively, so as to be movable along the two rail portions.

6. The support device according to claim 5.

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